基于遗传算法及Hicks-Henne型

以高空长航时无人机大展弦比机翼的层流翼型为研究对象,在低雷诺数范围内结合遗传算法与N-S方程气动数值解法,依靠计算流体动力学(CFD)计算技术,对翼型进行气动外形优化设计.在基准翼型的基础上,翼型描述采用了基于Hicks-Henne型函数的解析函数线性叠加法,个体以解析函数中的变量组成,通过选择、交叉及变异操作,进行了以高升阻比为目标的优化设计.优化后翼型在低雷诺数条件下的升力系数及升阻比有所提高,证明了利用遗传算法进行层流翼型气动外形优化是可行的.

Optimization Design of Laminar Aerofoil Based on Genetic Algorithms and Hicks-Henne Shape Function

The study object in this article is a laminar aerofoil,which belongs to a high altitude long endurance UAV with big wing aspect ratio.With the help of advanced technology of computation fluid dynamics(CFD),genetic algorithms are combined with N-S equations for the aerofoil optimization design at the bound of low Reynolds number to perform the aerodynamic shape optimization design of aerofoil.The aerofoil is described by equations of linearity adding analytic Hicks-Henne shape function on the basis of origin...